Header assembly for an implantable intracardiac device and respective intracardiac device

Abstract

Implantable intracardiac device and a header assembly for such device having at least one tine extending from a base ring, further comprising a spacer and a header cap, wherein the base ring of the anchoring device is conically formed. The inventive intracardiac device has small dimensions and provides, at the same time, a robust attachment mechanism.

1 . A header assembly for an implantable intracardiac device comprising, an anchoring device having at least one tine extending from a base ring, wherein the base ring is conically formed. 
     
     
         2 . The header assembly according to  claim 1 , wherein the base ring is conically formed in such way that a distal end of the base ring has a greater diameter compared with its proximal end. 
     
     
         3 . The header assembly according to  claim 1 , wherein the base ring has a plurality of recesses, including at least two groups of two recesses arranged adjacent in circumferential direction within said base ring's distal end surface. 
     
     
         4 . The header assembly according to  claim 1 , wherein each of the at least one tine comprises an abutting section directly extending from the base ring, wherein the abutting section of the tine continues the conical form of the base ring. 
     
     
         5 . The header assembly according to  claim 1 , wherein the base ring and the at least one tine are formed integrally in one-piece. 
     
     
         6 . The header assembly according to  claim 5 , wherein the base ring and the at least one tine are substantially made of a super-elastic and/or shape-memory material, comprising nitinol, wherein the anchoring device is cut from a tube made of the super-elastic and/or shape-memory material, and set into the desired shape after cutting. 
     
     
         7 . The header assembly according to  claim 1 , further comprising a header cap, a header spacer and optionally a collar, wherein the anchoring device is arranged between the header cap and the header spacer. 
     
     
         8 . The header assembly according to  claim 7 , wherein the header spacer comprises at least two projections extending in distal direction, wherein an inner side face of each of the at least two projections form a positive connection with the conical base ring. 
     
     
         9 . The header assembly according to  claim 8 , wherein each of the at least two projections of the spacer fits into a respective recess of the header cap. 
     
     
         10 . The header assembly according to  claim 7 , wherein the header cap comprises a recess at its distal end face, wherein the recess is configured to receive or retain the collar. 
     
     
         11 . An implantable intracardiac device with a cylindrical housing and the header assembly according to  claim 1 , wherein an electrode projects from the distal end of the housing, wherein the header assembly is arranged at the distal end of the housing of the intracardiac device such that the electrode projects through the header assembly. 
     
     
         12 . The implantable intracardiac device according to  claim 11 , wherein the distal end of the housing comprises a recess with at least two lateral projections, wherein the header assembly is adapted to be initially rotatable positioned within the recess and fixed by the lateral projections cooperating with respective lateral projections of the header cap.